Hi Aussie,
Have you considered using Sco VisionFS ? I've used this before on a Win only network and did not experience any major hiccups.
VisionFS installs on the Sco box, allowing PC's on the network access to Unix files and printers : blurb from SCO below :
Unlike NFSĀ® solutions, there is no need to spend valuable time installing, maintaining and configuring each PC: you just do it once on each UNIX server. SCO VisionFS includes unique, advanced technology to let you share workgroups across the intranet, and can make remote computers anywhere on the Internet appear as if they are on your local network.
Totally scalable:
Adding more clients requires no extra work. Network managers are free to concentrate on just a few servers rather than a large number of PCs. Shared resources are immediately made available to all Windows users without visiting or rebooting any PCs.
Share files over the intranet or Internet:
With Internet Workgroups, unique to SCO VisionFS, you can bring your global enterprise to your local network -- automatically. And with SCO CIFS BridgeTM technology, another unique feature, your local network can include computers anywhere on the Internet. Without any extra effort, Windows users can transparently and securely access files across the Internet.
Hassle-free administration:
The graphical Profile Editor provides a fast and powerful way to configure the server from a Windows PC. The Profile Editor simplifies time-consuming tasks and automates common operations.
No additional training:
Access to UNIX resources uses standard Windows components such as File Manager, Network Neighborhood and Windows applications. Anyone who can use Windows can use SCO VisionFS immediately.
Rgds
Warren